Air at 3.0 × 10-4 kg/s and 27°c enters a rectangular duct that is 1.0 m long and 4 mm x 16 mm on a side. a uniform heat flux of 600 w/m2 is imposed on the duct surface. what are the temperatures of the air and of the duct surface at the outlet? the temperature of the air at the outlet, in k: the temperature of the duct surface at the outlet, in k:

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object